Uniformat D3050

Unit heater, hydronic

Also called hot water unit heater

Confidence C
Version 0.1.0
Reviewed 2026-10-21

Service life

20 yearsmedian of the stated lives · sources say 20 years

Years in service. One stated life so far; the band will widen as sources are added.

Basis

20 years · Greater Napanee: By-law 2012-11, Tangible Capital Asset Policy, Appendix B Asset Useful Lives, p16 · “E20 Mechanical - Boilers, Fire Panel/Alarm, Unit Heaters, HVAC” (accounting life)
Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page. The row names unit heaters among other mechanical items, without saying hydronic.

How sources are chosen and recorded: sourcing policy.

Municipal lives for HVAC (D30)

43 municipalities in Ontario, British Columbia and Alberta state a life for HVAC as a whole, in 35 distinct tables: 10–50 years, median 20. These come from capital asset policies: accounting lives, used for amortization. They describe the system rather than this component, and none is a measured life.

Years. Each dot is one stated life and each bar a stated range; equal values stack. The dashed line is the median. Policies that copy the same table count once.

All 52 stated lives

Municipality	As written	Years	Kind	Source
Trent Lakes	HVAC systems	10	accounting	p10 · 2009
Fort St. James, Revelstoke, Rossland, Tumbler Ridge · same table	HVAC Systems	10–12	accounting	p5, p9, p7, p5 · 2010
Okanagan-Similkameen	HVAC Systems	10–12	accounting	p11 · 2023
Salmo	HVAC Systems	10–12	accounting	p6 · 2016
Duncan, North Cowichan · same table	Building Other (HVAC)	15	accounting	p17, p9 · 2011
Grey Highlands	Furnace	15	accounting	p11 · 2026
Kapuskasing	HVAC Systems	15	accounting	p14 · 2009
Sarnia	HVAC	15	accounting	p1
The Blue Mountains	Furnace	15	accounting	p11 · 2019
Westlock	HVAC	15–20	accounting	p11 · 2021
Meaford	HVAC - Furnace	15–25	accounting	p17 · 2020
Lloydminster	Permanent Structures - HVAC	20	accounting	p11 · 2023
Lloydminster	Permanent Structures - Mechanical equipment	20	accounting	p11 · 2023
Lloydminster	Portable Structures - HVAC	20	accounting	p11 · 2023
Lloydminster	Portable Structures - Mechanical equipment	20	accounting	p11 · 2023
Comox Valley	HVAC systems, mechanical, plumbing, wiring, etc.	20	accounting	p6 · 2010
Cranbrook	HVAC, plumbing, lighting, etc	20	accounting	p9 · 2010
Parksville	HVAC	20	accounting	p9 · 2023
Telkwa	HVAC Systems	20	accounting	p8
Amherstburg	Mechanical/Electrical - HVA, Lighting, Security systems, Electrical Panel	20	accounting	p8 · 2026
Amherstburg	Arena - Air Conditioner, Brine Chillers, Compressors, Dehumidifiers	20	accounting	p8 · 2026
Chapple	Building Improvements - HVAC Systems	20	accounting	p1
Greater Napanee	E20 Mechanical - Boilers, Fire Panel/Alarm, Unit Heaters, HVAC	20	accounting	p16 · 2012
Grey Highlands	HVAC	20	accounting	p11 · 2026
Kenora	Buildings - Mechanical System	20	accounting	p15 · 2026
London	Building Components - Services (HVAC, lighting, communication, plumbing etc.)	20	accounting	p2 · 2023
Meaford	HVAC - Air Distribution	20	accounting	p17 · 2020
Prince Edward	Buildings - HVAC	20	accounting	p34 · 2022
Rainy River	Building Improvements - HVAC Systems/Generator	20	accounting	p11 · 2010
Severn	Building Components - Air Conditioner	20	accounting	p400 · 2019
The Blue Mountains	Boiler	20	accounting	p11 · 2019
Welland	HVAC/Electrical/Mechanical	20	accounting	p8 · 2021
Bancroft, Centre Hastings, Hastings Highlands, Wollaston · same table	HVAC Systems	20–25	accounting	p5, p4, p6, p5
Orillia	Facility - HVAC, Boiler	20–25	accounting	p19
Vulcan County	HVAC (electrical, mechanical)	20–30	accounting	p5 · 2024
Leduc	Mechanical Systems	25	accounting	p13 · 2019
Duncan, North Cowichan · same table	Building Other (Electrical, Mechanical, etc.)	25	accounting	p17, p9 · 2011
Tofino	Systems - mechanical, electrical, HVAC	25	accounting	p12 · 2009
Amherstburg	Arena - Refrigeration Condenser, Scoreboard, Sound System	25	accounting	p8 · 2026
Greater Madawaska, Quinte West · same table	HVAC	25	accounting	p17, p38 · 2025
Greater Napanee	E25 Plant Mechanical & Electrical	25	accounting	p16 · 2012
Grey Highlands	Boiler	25	accounting	p11 · 2026
Kingston	Mechanical Equipment	25	accounting	p15 · 2016
Kirkland Lake	Buildings and Improvements - Mechanical/Electrical	25	accounting	p10 · 2020
Orillia	Arena - Condenser/refrigeration, compressor, HVAC, heating units	25	accounting	p19
Severn	Building Components - Furnace/Heating System	25	accounting	p400 · 2019
Severn	Building Components - Condenser	25	accounting	p400 · 2019
The Blue Mountains	HVAC System	25	accounting	p11 · 2019
Greater Napanee	E30 Chillers, Rink Piping, Fuel Storage Tanks	30	accounting	p16 · 2012
Simcoe	Mechanical	30	accounting	p19 · 2025
Brockton	Mechanical/Electrical (Heating/Cooling System, Refridgerating System)	40	accounting	p2 · 2009
Meaford	HVAC - System	50	accounting	p17 · 2020

Each row was matched to its page automatically: the label and the number appear in the text of the cited page. An editor has not yet compared every row with the table, so follow the page link before relying on one. About the policies · All approved rows as JSON

Preventive maintenance

No maintenance tasks are sourced for this component yet.

Open questions

These are Ontario accounting lives from municipal capital asset policies, not planning or observed replacement data.
No preventive maintenance tasks are sourced yet.

Know the answer? Send it with a source to [email protected].

Cite this

Citation

unfinished.one (2026). Unit heater, hydronic, v0.1.0. https://unfinished.one/c/unit-heater-hydronic/v/0.1.0

BibTeX

@misc{unfinished_unit_heater_hydronic_0_1_0,
  title = {Unit heater, hydronic},
  author = {{unfinished.one}},
  year = {2026},
  version = {0.1.0},
  url = {https://unfinished.one/c/unit-heater-hydronic/v/0.1.0},
  note = {CC BY 4.0}
}

Licence CC BY 4.0 · How to cite · JSON · Versions: 0.1.0